Anyway, when you get it, spray some hair spray on the bed, then put the glass on top.  Wait a few minutes, then heat up the bed, wait for about 15 minutes, then let it cool down.  The glass will stick to the bed.
Then spray a thin layer of hairspray on the surface, heat the bed up, and let the spray dry.  You can the print on that bed and your prints will stick very well.  You only need to spray a bit more when you see the print lifting.  I can usually do about 10 prints before I need to spray again.  Much better  (and cheaper) than Kapton.

I followed this steps (with the adding that I sprayed much much more spray) and, after having incredibile adhesion problem, last night I had to let the bed cool so I can take the print from it. Also, please note that bed adhesion will increase with the printings, mostly because a thin layer of ABS will remain on the bed, incresing adhesion.